it feels like to hit full force, and that gets into your muscle memory so if something happens you don't have to think about it, your body just does it. >> flyers like these are being handed out and posted all over the neighborhood in an effort to keep everyone informed. in san francisco's kron 4 news. return to index of stories... felicia reid, kron 4. >> in the north bay -- a teenager's visit to family members - was cut short when he was shot and killed. police are now looking for the gunman. 17-year-old la-vanial williams who is from weed, near the oregon border, was shot multiple times. he was found on a walkway on drake avenue in marin city just after midnight friday. family members say williams was staying with them and shot near their home. >> one of san francisco's famous twin sisters, has died. vivian brown suffered from alzheimer's disease and died in her sleep wednesday. vivian, and her sister, marian, were often seen walking arm-in- arm down san francisco streets. in colorful matching outfits and eye- catching hats. the pair appeared in advertisements for reebok, dell and v